Joseph wise of branford



@uiten tstrs stent @Hita JOSEPH WISE OE gennNEOisn), CONNECTICUT, `'.fiSStcNOE To THOMAS KENNEDY, OE SAME PLACE.

Letters Patent No. 61,977, clatecl February 12, 1867.

IMPROVED DIES FOR MAKING KNO-BS.

TO ALL WHOM 4I'I MAY GONCERN: y

Be it known that I, 'JOSEPH WISE, of Branford, in the county of 4New Haven, and. Stateof Connecticut, have invented a new improvement in Dies for Making Knobs; and I do hereby declare the following, 'when taken in connection with the accompanying drawings, and the lettersof reference marked thereon, to be a full, clear, and exact vdescription of the same, and which said drawings constitute part of this specification, andV represent, in`

Figure 1, a side view, a portion of the die broken away to show the' mechanism.

Figure 2, a vertical central section. i i

Figures 3 and 4, a top view of the under part of the die to illustrate'my improvement.

Figure 5, the knob; and in Figure 6, the neck.

My invention relates to an improvement in dies for making knobs from any substance formed in a plastic l state, and designed especially for the manufacture ofthe knobs patented to Thomas Kennedy, January 10,

1865, and consists in the arrangement or mechanism for formingt'he groovewin thefknob for the purpose of securing the neck thereto.

To enable others skilled in the art to construct and use my improvement, I will proceed toV describe the same as illustrated in the accompanying drawings. 4

Before proceeding to a full description of\ the apparatus I will iirst briefly describe the peculiarity of `the knob for whichmy invention is especially designed, and represented in tig. 5. K isthe knob, and O is a recess Aformed to receive the neck, having two notches, u and n, extending downto nearly the bottom of the recess and communicating with a groove, g, as denoted in broken lines in said tig. 5. The neck N of the knob, as seeniin iig. 6, is provided on opposite sides with projections p, corresponding to the notches ein., and so that when the neck is inserted into the knob the neck may be turned and the projections enter the groove g,lin the knob, and then the space around the neck is filled in the usual manner to secure the knob within the neck, the

grooves and projections'preventing the detachment-of the knob from the neck Without destroying` the knob. It is to form the notches n and the grooves g that my invention is specially designed.

rA is the lower, and B the upper, part of the die, having a recess formed in each, to receiye .and compress the material from which the knob .is to be formed. In the part A of' the die `is tired aV socket, C, of the size required for the opening in the knob, and provided with projections a, corresponding to the notch n in the knob, as seen in iig. 4f. Through the said socket is passed a spindle, D,,its upper end, E, resting upon the socket C, and provided with projctions d, corresponding to the projectionsa on the socket. To `the spindleD below the die is attached a lever, F, by which the said spindle may beturned, moving the projection el as from the position in iig. 3, to that in hg. 4; therefore, when in the position in, iigs.- 1 and 3, the die is filled `in the usual manner, the projections a form the notches in the knob, and by turning the lever F. theprojections d are moved within the knob and form the groove g; then ret-urn the lever and thc spind'leD to the irstjpcsition, so that the projections d and a correspond, the knob may be removed from the die. I find it advantageous to give to the grooves g a spiral form; this I do by a pin,f, on the spindle D, moving in fispiral groove in the'so'cket C, as denoted in fig. 2. To remove the knob from the die, I arrange a spindle I, passing down through the spindle D, and provided with a head, L, so that when the knob is complete and the upper 'part B of the knob removed, raises the spindle I, as denoted in red, and the knob is easily removed. l

Having thus fully described my invention, what I claim as new and useful, and desire to secure by Letters 1. The combination and arrangement of the socket C, and spindle D, provided, respectively with projections a and d, and arrranged to operate substantially in the manner described.

2. In combination with the above I claim the arrangemea'it of the spindle I, as and for the purpose speciied.'

JOSEPH WISE.

Witnesses:

JOHN II. ROYALL, JOHN EARLE. 

